I was looking something up in the manual an realized I had put the brake shoes on backwards. On each brake there is a long shoe and a short shoe. I reflexively put the long shoe in front like on my Studebaker. But the Stude does not have self-adjusting brakes. On the Jeep (and most cars) the small shoe goes in front. The rotation of the wheel pushes on the brakes and forces the larger rear shoe against the drum harder.
So here is the wrong way to do it. The rear of the car is to the left so the small shoe is in back. WRONG. I took apart all four wheels and fixed it. What a pain.